Motion simulation device of static blade adjusting mechanism for experiment

Abstract

The invention belongs to the field of aero-engine multi-body dynamics tests, and particularly relates to a motion simulation device of a stationary blade adjusting mechanism for an experiment, which comprises an optical axis rod fixedly arranged on a support and a blade rotatably arranged on the support, and the optical axis rod is movably connected with a linkage ring. One side of the linkage ring is fixedly connected with a first transmission mechanism and a second transmission mechanism; the first transmission mechanism is used for transmitting rotating power of driving equipment to the linkage ring and enabling the linkage ring to rotate around the axis of the optical axis rod while moving on the optical axis rod along the axis of the optical axis rod; the end face of the linkage ring is slidably connected with a second transmission mechanism which is used for filtering movement of the linkage ring along the axis of the optical axis rod and driving the linkage ring to rotate around the axis of the optical axis rod to drive the blade shaft to rotate in a gear transmission mode. Gear transmission is used for replacing rocker arm transmission of blades in the prior art, the transmission distance can be shortened, rotation of the blades can be improved, and the blade motion characteristics of the stationary blade adjusting mechanism can be restored more effectively.

Description

Technical Field

[0001] The present invention belongs to the field of multi-body dynamics experiments of aero-engines, and particularly relates to a motion simulation device for a static blade adjusting mechanism for experiments. Background Art

[0002] As an air flow regulating device of a compressor, the static blade adjusting mechanism is used to adjust and control the position and displacement of the blades with a certain accuracy, and is an important component of an aero-engine. With the increasing requirements for the working environment and the tactical indexes of aircraft, the adjustment range of the engine must be widened, which makes the structure of the static blade adjusting mechanism complex, and it should have both high stability and high adjustment accuracy and service strength.

[0003] The existing static blade adjusting mechanism has a complex structure, and the linkage ring is tightly connected to the guide vane rocker arm. When studying its motion mode, it is difficult to build a test bench by restoring the structure in a 1:1 manner. Currently, a motion simulation test device is generally built by decomposing its structural functions. However, turning it into a combination of kinematic pairs such as spherical pairs and sliding pairs will cause the blade rocker arm to be too long, resulting in a large difference from the real transmission effect and affecting the experimental results.

[0004] For example, the Chinese patent application with the application number 202411498751.0 discloses a motion simulation test bench for a static blade adjusting mechanism. Specifically, it discloses that a plate-type simulation linkage ring drives the rocker arm and the third rotating shaft to rotate synchronously, and finally the rotating third rotating shaft drives the plate-type simulation blade to adjust the rotation angle.

[0005] However, in this patent, the rocker arm is connected to the plate-type simulation linkage ring through spherical pairs and sliding pairs. This makes the plate-type simulation linkage ring need to transmit the action to the plate-type simulation blade through spherical pairs, sliding pairs and the rocker arm. The increase of kinematic pairs will affect the transmission accuracy. At the same time, the transmission distance from the plate-type simulation linkage ring to the plate-type simulation blade is too long, resulting in a large difference from the real transmission effect. In addition, under the action of the torsional force of the plate-type simulation linkage ring, the rocker arm is prone to deformation due to its own material, thus affecting the adjustment accuracy of the plate-type simulation blade and reducing the accuracy of the motion simulation experiment. Summary of the Invention

[0006] Aiming at the problems existing in the prior art, the present invention aims to provide a motion simulation device for a static blade adjusting mechanism for experiments, aiming to simulate the motion of the static blade adjusting mechanism on the basis of reducing the transmission distance between the linkage ring and the blade, so as to accurately simulate the motion law of the static blade adjusting mechanism.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0008] A motion simulation device for a static blade adjustment mechanism in an experiment, comprising: a bracket, a optical axis rod fixedly arranged on the bracket, and a blade shaft rotatably arranged on the bracket. A blade is fixedly connected to the blade shaft. A linkage ring with an end face is movably connected to the optical axis rod. One side of the linkage ring is fixedly connected to a first transmission mechanism, which is used to transmit the rotational power of a driving device to the linkage ring and enable the linkage ring to move along the axis of the optical axis rod while rotating around the axis of the optical axis rod. On the other side of the linkage ring, a second transmission mechanism is slidably connected to the end face of the linkage ring. The second transmission mechanism is used to filter the movement of the linkage ring along the axis of the optical axis rod, and drive the blade shaft to rotate by means of gear transmission for the rotation of the linkage ring around the axis of the optical axis rod;

[0009] Further, the second transmission mechanism includes: a slide plate slidably arranged on the end face of the linkage ring along the axis of the optical axis rod. A second slider is arranged on the side of the slide plate away from the center of the linkage ring. The second slider is slidably connected in a second slideway, and the second slideway is fixedly arranged on the outside of the linkage ring. The end face of the slide plate is provided with gear teeth, and the gear teeth are meshed with a gear fixedly arranged at the end of the blade shaft;

[0010] Further, the shape of the second slider is an arc matching the outer circle of the linkage ring;

[0011] Further, the first transmission mechanism includes: a wedge block. One end of the wedge block is fixedly connected to the end face of the linkage ring. The other end of the wedge block is fixedly connected to the base of a spherical hinge joint. The ball pin of the spherical hinge joint is fixedly connected to one end of a first connecting rod. The other end of the first connecting rod is rotatably arranged on an optical axis and can move along the axis of the optical axis. The axis of the optical axis is perpendicular to the axis of the optical axis rod. A stop block is arranged at one end of the optical axis close to the optical axis rod, and the other end is fixedly connected to one end of a second connecting rod. The other end of the second connecting rod is fixedly connected to the output shaft of the driving device, and the axis of the output shaft of the driving device is perpendicular to the axis of the optical axis rod;

[0012] The optical axis is a dowel bolt. The threaded part of the dowel bolt is fixedly connected to the end of the second connecting rod, and the smooth rod part of the dowel bolt is connected to the first connecting rod through a second linear bearing;

[0013] Further, the second connecting rod is a triangular planar crank. The first transmission mechanism further includes: a driving bracket, which fixedly arranges a fixing plate parallel to the axis of the optical axis rod. One angular end of the planar crank is rotatably fixed on the fixing plate for fixedly connecting to the output shaft of the driving device. The angular end of the planar crank above the fixing plate is used for fixedly connecting to the optical axis. The angular end below the fixing plate is rotatably connected to a third connecting rod, and the third connecting rod is arranged parallel to the fixing plate;

[0014] Further, the driving device is a servo motor;

[0015] Further, a first linear bearing is fixedly arranged at the center of the linkage ring;

[0016] Further, both the first linear bearing and the second linear bearing are stroke-type linear bearings;

[0017] Further, a detection device is also included. The detection device includes an angular displacement sensor and an eddy current sensor, wherein: the angular displacement sensor is used to detect the rotation angle of the blade, the displacement sensor is fixedly arranged on the blade shaft, and the eddy current sensor is used to monitor the axial and radial displacement distances of the linkage ring along the optical axis rod, and the eddy current sensor is fixedly arranged on the vertical rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The present invention uses gear transmission to replace the existing technology in which the blade is driven by a rocker arm. Since the gear transmission has high precision and a compact structure, compared with the connection of the rocker arm plus the joint pair in the prior art, the transmission distance is shortened, and the problem that the rocker arm component is easily deformed under the influence of the torsional force of the linkage ring during the transmission process, resulting in inaccurate rotation accuracy of the end blade, is effectively solved, and the blade motion characteristics of the static blade adjustment mechanism are more effectively restored;

[0020] In addition, the present invention can also use the crank four-bar mechanism to drive the blades at all levels to rotate synchronously, and realize that the blades at all levels can have different rotation directions, obtain the influence law of the multi-stage linkage mechanism on the different rotation accuracies of the end blades at all levels, and meet the test requirements for carrying out the multi-body dynamics of the multi-stage linkage mechanism. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the linkage ring;

[0023] Figure 3 is a partial enlarged view of the first transmission mechanism;

[0024] Figure 4 is a schematic diagram of the structure of the second transmission mechanism;

[0025] Figure 5 is a partial enlarged view of the second transmission mechanism;

[0026] Figure 6 is a schematic diagram of the overall structure of the secondary linkage of the present invention;

[0027] Figure 7 is a partial structural schematic diagram of the first transmission mechanism during the secondary linkage of the present invention;

[0028] In the figure: 1. Blade; 11. Blade shaft; 2. Linking ring; 21. Wedge opening; 22. Notch; 23. First slideway; 24. First linking ring; 25. Second linking ring; 3. Smooth shaft rod; 4. First transmission mechanism; 41. Wedge block; 42. Spherical hinge joint; 43. First connecting rod; 44. Smooth shaft; 45. Second connecting rod; 441. Plug bolt; 442. Second linear bearing; 451. First planar crank; 452. Second planar crank; 5. Second transmission mechanism; 51. Slide plate; 52. First slider; 53. Second slider; 54. Gear pattern; 55. Second slideway; 6. Bracket; 7. Driving device; 71. Driving bracket; 72. Fixed plate; 73. Third connecting rod. Specific embodiments

[0029] Next, the technical solutions adopted by the present invention will be clearly and completely explained and described in conjunction with the specification drawings and embodiments.

[0030] First of all, the present invention provides a motion simulation device for a static blade adjustment mechanism for experiments, and its overall structure is as Figure 1 shown, including:

[0031] The blade 1 is fixedly connected to the blade shaft 11. When the blade shaft 11 rotates around its own axis, it can drive the blade 1 to rotate, realizing the motion simulation of the angle adjustment of the blade 1 by the entire motion simulation device;

[0032] The linking ring 2 has an end face, and the smooth shaft rod 3 is movably sleeved at the center of the linking ring 2, that is, the linking ring 2 can move along the axis of the smooth shaft rod 3 and rotate around the axis of the smooth shaft rod 3 on the smooth shaft rod 3. Preferably, a first linear bearing can be arranged at the center of the linking ring 2. The first linear bearing is preferably a stroke-type linear bearing, and the first linear bearing is fixedly connected to the center of the linking ring 2 by using the flange at the end of the first linear bearing and bolts, and then the first linear bearing is sleeved on the smooth shaft rod 3 to improve the efficiency of the linking ring 2 moving along the axis of the smooth shaft rod 3 and rotating around the axis of the smooth shaft rod 3 on the smooth shaft rod 3;

[0033] Furthermore, both ends of the smooth shaft rod 3 are fixedly connected to the brackets 6 for supporting the smooth shaft rod 3. A support seat can be fixedly arranged at the top of the bracket 6 and fixed to the end of the smooth shaft rod 3, and its bottom end can be fixed to the ground in cooperation with anchor bolts;

[0034] The first transmission mechanism 4 is arranged on one side of the linking ring 2, and is used to transmit the rotational power of the driving device 7 to the linking ring 2, and make the linking ring 2 move along the axis of the smooth shaft rod 3 and rotate around the axis of the smooth shaft rod 3 while moving on the smooth shaft rod 3;

[0035] In this embodiment, the driving device 7 is preferably a steering gear to provide a reciprocating rotational motion. In other embodiments, it can also be a servo motor. A device support platform or bracket 6 can be fixedly connected to the driving device 7 to support the driving device 7;

[0036] Furthermore, the first transmission mechanism 4 includes: a wedge block 41, one end of the wedge block 41 is fixedly connected to the end face of the linkage ring 2. Specifically, in this embodiment, as Figure 2 shown, a wedge opening 21 is formed on the end face of the linkage ring 2. The end of the wedge block 41 is inserted into the wedge opening 21, and the end of the wedge block 41 is fixedly connected to the end face of the linkage ring 2 by means of a bolt connection;

[0037] The other end of the wedge block 41 is fixedly connected to the base of the ball hinge joint 42. The ball hinge joint 42 is formed by a hinge ball pin inside the base. One end of the first connecting rod 43 is fixedly connected to the ball pin. The other end of the first connecting rod 43 is rotatably arranged on the optical axis 44 and can move along the axis of the optical axis 44, that is, the end of the first connecting rod 43 is sleeved on the optical axis 44, and it can rotate around the axis of the optical axis 44 and move along the axis of the optical axis 44 at the same time;

[0038] Furthermore, the axis of the optical axis 44 is perpendicular to the axis of the optical axis rod 3. A stop block is provided at one end of the optical axis 44 close to the optical axis rod 3 to block the sliding of the first connecting rod 43 on the optical axis 44. The other end of the optical axis 44 is fixedly connected to one end of the second connecting rod 45. The other end of the second connecting rod 45 is fixedly connected to the output shaft of the driving device 7, and the axis of the output shaft of the driving device 7 is perpendicular to the axis of the optical axis rod 3;

[0039] As Figure 3 shown, the optical axis 44 is preferably a dowel bolt 441. That is, the threaded part of the dowel bolt 441 is fixedly connected to the end of the second connecting rod 45 by means of a threaded connection. A connecting hole is formed at the end of the first connecting rod 43, and a second linear bearing 442 is fixedly arranged in the connecting hole. The second linear bearing 442 is preferably a stroke linear bearing. In this embodiment, the first connecting rod 43 and the second linear bearing 442 can be fixed by using the connecting flange at the end of the second linear bearing 442 and bolts. By sleeving the second linear bearing 442 on the smooth rod part of the dowel bolt 441, the other end of the first connecting rod 43 is rotatably arranged on the optical axis 44 and can move along the axis of the optical axis 44. The bolt head of the dowel bolt 441 can serve as the stop block;

[0040] Specifically, in this embodiment, the driving device 7 drives the optical axis 44 to rotate through the second connecting rod 45. Since the rotation plane is perpendicular to the plane where the linkage ring 2 is located, during the rotation of the optical axis 44, one end of the first connecting rod 43 is driven to move along the axis of the optical axis 44 and rotate around the axis of the optical axis 44 on the optical axis 44. Furthermore, the ball joint 42 drives the linkage ring 2 to move along the axis of the optical axis rod 3 and rotate around the axis of the optical axis rod 3 from one side of the linkage ring 2 through the wedge block 41.

[0041] The second transmission mechanism 5 is located on the other side of the linkage ring 2, that is, opposite to the first transmission mechanism 4, and the second transmission mechanism 5 is slidably arranged in the end face of the linkage ring 2. It can filter the movement of the linkage ring 2 along the axis of the optical axis rod 3, and at the same time, it can also transmit the rotation of the linkage ring 2 around the axis of the optical axis rod 3 and drive the blade shaft 11 to rotate by means of gear transmission.

[0042] In this embodiment, as Figure 2 shown, on the end face of the linkage ring 2, a notch 22 for slidably connecting with the second transmission mechanism 5 is opened from the outer circle of the linkage ring 2 towards the center of the circle. The upper and lower ends of the notch 22 are provided with first sliding grooves 23 parallel to the axis of the optical axis rod 3.

[0043] Furthermore, the second transmission mechanism 5, as Figures 4-5 shown, is provided with a sliding plate 51 whose shape matches that of the notch 22. The end face of the sliding plate 51 is provided with gear teeth 54. Both the upper and lower ends of the sliding plate 51 are provided with first sliding blocks 52 that are slidably matched with the first sliding grooves 23. On the side of the sliding plate 51 away from the center of the linkage ring 2, a second sliding block 53 extends a certain distance towards the outside of the linkage ring 2. As Figure 1 、 5 shown, the second transmission mechanism 5 further includes a second sliding groove 55 fixedly arranged on the outside of the linkage ring 2, and the second sliding groove 55 is slidably connected with the second sliding block 53.

[0044] Furthermore, the shape of the second sliding block 53 is preferably an arc that matches the outer circle of the linkage ring 2.

[0045] Specifically, the present invention uses a sliding plate 51 whose shape matches the outer shape of the notch 22 on the end face of the linkage ring 2, and through the sliding fit between the first sliding grooves 23 opened at the upper and lower ends of the notch 22 and the first sliding blocks 52 opened at the upper and lower ends of the sliding plate 51, the entire second transmission mechanism 5 is slidably arranged in the end face of the linkage ring 2. Since the direction of the first sliding grooves 23 is parallel to the axis of the optical axis rod 3, when the linkage ring 2 rotates around the axis of the optical axis rod 3, the first sliding blocks 52 are stuck in the first sliding grooves 23 and no sliding occurs between the two, while the second sliding block 53 can still slide in the second sliding groove 55, thereby driving the second transmission mechanism 5 to rotate around the axis of the optical axis rod 3 together with the linkage ring 2.

[0046] When the linkage ring 2 moves along the axis of the optical axis rod 3, since the second slideway 55 is fixedly arranged outside the linkage ring 2, the second slideway 55 can hold the second slider 53, thereby preventing the second transmission mechanism 5 from moving along the axis of the optical axis rod 3 together with the linkage ring 2. The linkage ring 2 can move relative to the second transmission mechanism 5 while moving along the axis of the optical axis rod 3 by means of the slidably mated first slideway 23 and first slider 52;

[0047] One end of the blade shaft 11 is fixedly connected to a gear 12 that meshes with the gear thread 54, and the other end of the blade shaft 11 is rotatably arranged on the bracket 6;

[0048] When the linkage ring 2 moves along the axis of the optical axis rod 3, the second transmission mechanism 5 is relatively stationary. Therefore, the gear thread 54 can always maintain meshing with the gear 12. When the linkage ring 2 rotates around the axis of the optical axis rod 3, the rotation of the linkage ring 2 can drive the blade shaft 11 to rotate through the meshing of the gear thread 54 and the gear 12 with each other, that is, the second transmission mechanism 5 can filter the movement of the linkage ring 2 along the axis of the optical axis rod 3, and at the same time, the rotation of the linkage ring 2 around the axis of the optical axis rod 3 can drive the blade shaft 11 to rotate by means of gear transmission.

[0049] The usage process of the present invention is as follows: First, drive the device 7 to drive the second connecting rod 45 to rotate in a plane perpendicular to the plane where the linkage ring 2 is located. While the second connecting rod 45 rotates, it drives the first connecting rod 43 to move along the axis of the linear pair 44 and rotate around the axis of the linear moving pair 44 on the linear pair 44. During the movement of the first connecting rod 43, the linkage ring 2 is driven to rotate around the axis of the optical axis rod 3 and move along the axis of the optical axis rod 3 on the optical axis rod 3 through the ball hinge joint 42 and the wedge block 41. At this time, the rotational movement of the linkage ring 2 around the axis of the optical axis rod 3 on the optical axis rod 3 will drive the slide plate 51 to rotate synchronously. The gear thread 54 arranged on the end face of the slide plate 51 meshes with the gear 12 at the end of the blade shaft 11 to drive the blade shaft 11 to rotate around its own axis, realizing the motion simulation of the angle adjustment of the blade 1 by the entire motion simulation device. The movement of the linkage ring 2 along the axis of the optical axis rod 3 on the optical axis rod 3 is blocked by the second transmission mechanism 5 through the second slider 53 and the second slideway 55 arranged outside the linkage ring 2, and the linkage ring 2 can also move relative to the second transmission mechanism 5 along the axis of the optical axis rod 3, that is, it is filtered by the second transmission mechanism 5, and finally the gear thread 54 and the gear 12 at the end of the blade shaft 11 are kept meshing.

[0050] Furthermore, the present invention further includes a detection device, which includes: an angular displacement sensor 8 and an eddy current sensor 9. Among them: the angular displacement sensor 8 is used to detect the rotation angle of the blade 1. In this embodiment, the displacement sensor 8 is fixedly arranged on the blade shaft 11 to detect the rotation angle of the blade 1;

[0051] The eddy current sensor 9 is used to monitor the distance of the linkage ring 2 moving axially along the optical axis rod 3 and the angle of rotation around the axis of the optical axis rod 3. It can be fixedly arranged above the wedge block 41 by using a vertical rod, and obtained by monitoring the displacement distances of the wedge block 41 along the axial and radial directions of the optical axis rod 3.

[0052] Secondly, according to the above motion simulation device, the present invention can also be set in a multi-stage linkage form, that is, a driving device 7 drives a plurality of linkage rings 2 movably connected to the optical axis rod 3 at the same time to complete the above motion, and drives a plurality of blades 1 to synchronously adjust the angles;

[0053] Specifically, a plurality of linkage rings 2 can be movably arranged on the optical axis rod 3. Each linkage ring 2 is used as one stage, and a plurality of blades 1 are controlled to rotate through the first transmission mechanism 4 and the second transmission mechanism 5 arranged on their respective end faces;

[0054] Such as Figure 6 Taking the two-stage linkage shown in

[0055] as an example, that is, a first linkage ring 24 and a second linkage ring 25 are movably arranged on the optical axis rod 3. The second transmission mechanisms 5 with the same structure as the above are arranged on the end faces of the first linkage ring 24 and the second linkage ring 25, which are used to transmit the motion of the first linkage ring 24 and the second linkage ring 25 on the optical axis rod 3 to two blade shafts 11. The end of each blade shaft 11 is rotatably arranged on the bracket 6 to realize the rotation of the blade shaft 11 driving the blade 1;

[0056] Different from the above structure, in the first transmission mechanism 4 arranged on the end faces of the first linkage ring 24 and the second linkage ring 25, the second connecting rods 45 used for fixedly connecting with the driving device 7 are all planar cranks, and the shape of the planar crank is triangular, such as Figure 6 the first planar crank 451 and the second planar crank 452 shown in

[0057] In addition, the first transmission mechanism 4 further includes: on the driving bracket 71, a fixing plate 72 parallel to the axis of the optical axis rod 3 is fixedly arranged on the driving bracket 71. One same angular end of the first planar crank 451 and the second planar crank 452 can be rotatably fixed on the fixing plate 72, and the other two angular ends of the first planar crank 451 and the second planar crank 452 are respectively located on the upper and lower sides of the fixing plate 72, that is, the angular ends of each planar crank located on the upper and lower sides of the fixing plate 72 can rotate around their respective angular ends fixed on the fixing plate 72;

[0058] Among them, the corner ends of the planar crank above the fixed plate 72 are all used for fixedly connecting with the optical axis 44, and the corner ends below the fixed plate 72 are rotatably connected to the third connecting rod 73, and the third connecting rod 73 is arranged parallel to the fixed plate 72;

[0059] As Figure 7 shown, that is, the first planar crank 451 and the second planar crank 452 together with the fixed plate 72 and the third connecting rod 73 form a four-bar mechanism. Thus, when the driving device 7 drives the corner end of the first planar crank 451 that is rotatably fixed on the fixed plate 72 to rotate, it will synchronously drive the second planar crank 452 to rotate around its corner end fixed on the fixed plate 72 through the third connecting rod 73, thereby realizing secondary linkage, and multi-stage linkage can be realized by adopting the same setting;

[0060] In addition, by adjusting the arrangement of the first planar crank 451 and the second planar crank 452, the movement directions of the first linkage ring 24 and the second linkage ring 25 can be set to be the same or opposite.

[0061] Finally, the above are only the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art in this technical field, based on the present invention, makes equivalent substitutions or changes according to the technical solution and concept of the present invention, and all are covered by the protection scope of the present invention.

Claims

1. A motion simulation device for a static blade adjusting mechanism in an experiment, comprising: A bracket (6), a light shaft rod (3) fixedly arranged on the bracket (6), and a blade shaft (11) rotatably arranged on the bracket (6). A blade (1) is fixedly connected to the blade shaft (11). A linkage ring (2) with an end face is movably connected to the light shaft rod (3). One side of the linkage ring (2) is fixedly connected to a first transmission mechanism (4). The first transmission mechanism (4) is used to transmit the rotational power of a driving device (7) to the linkage ring (2) and enable the linkage ring (2) to move along the axis of the light shaft rod (3) and rotate around the axis of the light shaft rod (3) while moving on the light shaft rod (3). It is characterized in that, on the other side of the linkage ring (2), a second transmission mechanism (5) is slidably connected to the end face of the linkage ring (2). The second transmission mechanism (5) is used to filter the movement of the linkage ring (2) along the axis of the light shaft rod (3), and drive the blade shaft (11) to rotate by means of gear transmission of the rotation of the linkage ring (2) around the axis of the light shaft rod (3).

2. The motion simulation device of a static blade adjustment mechanism for experimental use according to claim 1, characterized in that, The second transmission mechanism (5) includes: a slide plate (51) slidably arranged on the end face of the linkage ring (2) along the axis direction of the light shaft rod (3). A second slider (53) is arranged on the side of the slide plate (51) away from the center of the linkage ring (2). The second slider (53) is slidably connected in a second slideway (55). The second slideway (55) is fixedly arranged on the outside of the linkage ring (2). The end face of the slide plate (51) is provided with gear teeth (54). The gear teeth (54) are engaged with a gear (12) fixedly arranged at the end of the blade shaft (11).

3. The motion simulation device of a static blade adjustment mechanism for experiments according to claim 2, characterized in that, The shape of the second slider (53) is an arc matching the outer circle of the linkage ring (2).

4. The motion simulation device of a static blade adjustment mechanism for experimental use according to claim 1, characterized in that, The first transmission mechanism (4) includes: a wedge block (41). One end of the wedge block (41) is fixedly connected to the end face of the linkage ring (2). The other end of the wedge block (41) is fixedly connected to the base of a spherical hinge joint (42). The ball pin of the spherical hinge joint (42) is fixedly connected to one end of a first connecting rod (43). The other end of the first connecting rod (43) is rotatably arranged on a light shaft (44) and can move along the axis of the light shaft (44). The axis of the light shaft (44) is perpendicularly arranged to the axis of the light shaft rod (3). A stop block is arranged at one end of the light shaft (44) close to the light shaft rod (3), and the other end of the light shaft (44) is fixedly connected to one end of a second connecting rod (45). The other end of the second connecting rod (45) is fixedly connected to the output shaft of the driving device (7). The axis of the output shaft of the driving device (7) is perpendicularly arranged to the axis of the light shaft rod (3).

5. The motion simulation device of a static blade adjusting mechanism for experiments according to claim 4, characterized in that, The light shaft (44) is a dowel bolt (441). The threaded part of the dowel bolt (441) is fixedly connected to the end of the second connecting rod (45). The smooth rod part of the dowel bolt (441) is connected to the first connecting rod (43) through a second linear bearing (442).

6. The motion simulation device of a static blade adjusting mechanism for experiments according to claim 4, characterized in that, The second connecting rod (45) is a triangular planar crank. The first transmission mechanism (4) further includes: a driving bracket (71), on which a fixing plate (72) parallel to the axis of the optical shaft rod (3) is fixedly arranged. One angular end of the planar crank is rotatably fixed on the fixing plate (72) for fixedly connecting with the output shaft of the driving device (7). The angular end of the planar crank above the fixing plate (72) is used for fixedly connecting with the optical shaft (44). The angular end below the fixing plate (72) is rotatably connected to a third connecting rod (73), and the third connecting rod (73) is arranged in parallel with the fixing plate (72).

7. The motion simulation device of a static blade regulating mechanism for experimental use according to claim 1, characterized in that The driving device (7) is a servo motor.

8. The motion simulation device of a static blade adjustment mechanism for experimental use according to claim 1, characterized in that, A first linear bearing is fixedly arranged at the center of the linkage ring (2).

9. The motion simulation device of a static blade adjustment mechanism for experiments according to claim 5 or 8, characterized in that, Both the first linear bearing and the second linear bearing are stroke-type linear bearings.

10. The motion simulation device of a static blade adjusting mechanism for experimental use according to claim 1, characterized in that, It further includes a detection device, which includes an angular displacement sensor (8) and an eddy current sensor (9). Among them: the angular displacement sensor (8) is fixedly arranged on the blade shaft (11) for detecting the rotation angle of the blade (1). The eddy current sensor (9) is fixedly arranged on the vertical rod for monitoring the axial and radial displacement distances of the linkage ring (2) along the optical shaft rod (3).

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